Combined hot air and hot watek heater



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` A. C. MOT'I". COMBINED HOT AIR AND HUT WATER HEATER.

No. 516,059. Patented Mar. 6, M394.

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(No Model.) 3 Sheets-Sheet 2. A. C. MOTT.

E COMBINED HOT AIR AND HOT WATER HEATER.

Patented Mar. 6, 1894.

(INU Mudel.) 3 Sheets-Sheet 3.

' A. C. MOTT.

COMBINED HOT'AIR AND EGT WATER HEATER.

No. 516,059. Patented Mar. 6, 1894.

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AERAM C. MOTT, OF PHILADELPHIA, PENNSYLVANIA.

COMBINED HOT-AIR AND HOT-WATER HEATER.

SPECIFICATION forming part of Letters Patent No. 516,059, dated March 6,1894.

Application filed May 5, 1893. Serial No. 473,082. (No model.)

To (LZ2. ureot may concern:

Be it known that I, ABRAM C. MUTT, a citizen of the United States,residing in Philadelphia, Pennsylvania, have invented certainIniprovements in a Combined Hot-Air and Hot- Watei-Heater, of which thefollowing is a speciiication.

The object of my invention is to construct a combined water and airheating furnace in such a manner that the water connections are notwithin the combustion chamber and in which the water section is made inone piece and adapted to fit inside a crab, the crab and water sectionbeing so formed that they can be mounted independently of each other asrequired.

In the accompanying drawingsz-Figure l, is a sectional elevationillustrating my combined water and air heating furnacel Fig. 2, is asectional plan on the line 1--2, Fig. l. Fig. 8, is a plan view oi thewater section. Fig. 4, is a side view of the same; and Fig. 5, is asectional plan on the line 3 4, Fig. e.

A is the tire pot made in the present instance of cast metal havingradiating wings c, the lower edge of the fire pot is seated in thesupporting frame B in which is mounted the grate C.

-In the upper surface of the fire pot Ais an annular groovect andmounted on the hre pot is the water section I) having an annular rib clwhich enters the groove a. The watersection D is composed of the annularbase ring b, dome b and connecting necks b2; these necks are so spacedas to rest between the fines ein the crab E which is mounted outside ofand upon the water section. The rib e of the crab entering a groove e inthe base ring of the water section, as clearly shown in Fig.1. The domeb of the water section is less in diameter than the ring, as shown, sothat the ring, dome and connecting necks can be cast in one piece in asimple mold. The crab lits snugly against the dome of the water sectionat e2 and the rib e3 ofthe crab and the rib d2 on the dome are heldtogether by a grooved ring F between which and the dome is placed gasproof packing; this packing is also placed between the ring and an outerannular rib e3 on the crab. Gas proof backing is also placed within thegrooves n and e', so that the air heating chamber W W' will be entirelyfree from gas. Upon the upper ringE of the crab are mounted the innerand outer drums G G and the dues e communicate with the space V betweenthe drums, and this spaceV communicates with the smoke ilue so that theproducts of combustion pass from the fire pot through the lines e in thecrab, through the space V between the drums to the smoke hue. Suitabledellectors maybe placed in the space V to deflect the products ofcombustion in their passage through the furnace.

The Water inlet pipes i, e are connected to the base ring of the Watersection B at the outside, the connection being made in the hot airchamber W', I make two connections one on one side of the furnace andthe other on the other, so that the water may be distributed morereadily, but it will be understood that one connection may be used.

The outlet pipeI is screwed into the top of the dome, the joint beingmade in the hot air chamber W and neither the inlet or outlet pipes passthrough the combustion chamber or smoke flue; the outlet pipe passingthrough the top of the furnace as clearly shown in Fig. l. In someinstances I provide a circulating pipe 'L' forming a communicationbetween the outlet and inlet pipes.

The outer casing .l is of the ordinary construction mounted upon asuitable base ring J and having a suitable top J2 in which are theopenings j connecting with the hot air pipesj. On the inside of thiscasing .l is a second casing K extending between the base of the tirepot and the upper portion of the drums G, G', this additional casingprevents the radiation of heatin the cellar.

I can substitute drums, as shown by dotted lines in Fig. 5, for the crabwithout departing from my invention.

It will be seen by the above description that a dealer can set up eitheran air heater or a combined air and water heater by keeping in stocksimply two sizes of Jdre pots avoiding the necessity ot keeping twocomplete sets of heaters one hot air set and the other a combined set,as is now the ease.

By making the water section in one casting all joints in the combustionchamber are avoided. In water heaters made up in sections the joints aresubjected usually to the `direct. action ot the products ot combustionconsequently they are likely to soon burn out and leak and have to berepaired, entailing large expense upon the owner.

I claim as my inventionl. The combination in a combined Water and airheating furnace, of the iire pot, the Water section forming the dome ofthe com bustion chamber, a casing surrounding the central portion of theWater section so that inlet and outlet pipes can be connected totheWater section below and above the casing and extending outside of thecombustion chamber and whereby the products of combustion can gainaccess to both sides of the central portion of the Water section,substantially as described.

2. The combination in a combined Water and airl heating furnace, of thelire pot, the Water section mounted thereon comprising a ring and dome,a crab resting upon the ring of said water section and surrounding thedome, said water section having tlues and drums mounted upon the crab,the inlet and outlet of the Water section being outside the combustionchamber, substantially as described.

3. The combination in a combined hot Water and hot air heater, of the repot, the crab, with a hot Water section comprising a ring and dome, thering being mounted between the crab and the tire pot, and the domeextending through the crab, substantially as de; scribed.

4. A Water section for heating furnaces cast in one piece and consistingof a dome, base ring and connecting necks, the diameterot the dome beingless than the inner diameter of the ring so that the Water section canbe cast in a single mold, substantially as described.

5. In a combined Water and air heating furnace, the combination of thefire pot, the hot Water section composed ot the base ring, dome andconnecting necks, the said ring being mounted upon the fire pot, thedome being smaller in diameter than the base ring and connected theretoby the necks, a crab mounted on the base ring and adapted to fit snuglyagainst the sides of the dome, said dome extending through the crab, anddrums mounted on the crab, substantially as described.

6. The combination of the fire pot, a Water section mounted thereoncomposed ot the base ring, dome and connecting necks, tlues between thenecks for the products of combustion, a crab mounted upon the Watersection and having flues aligning with the flues in the Water section,the dome of the Water sec` tion passing through the crab, and drumsmounted upon said crab, the space between the kdrums connecting With thefines, said drums forming inner and outer heating chambers, the inletconnections to the Water section being in the outer heating chamber andthe outlet connections being in the inner heating chamber, substantiallyas described.

In testimony whereof I have signed my name to this specication in thepresence ot two subscribing Witnesses.

ABRAM C. MOTT.

Witnesses:

FRANK E. BEcH'roLD, JAMES F. HAGEN.

